lodash/isMap.js

import getTag from './_getTag';
import isObjectLike from './isObjectLike';

/** `Object#toString` result references. */
var mapTag = '[object Map]';

/**
 * Checks if `value` is classified as a `Map` object.
 *
 * @static
 * @memberOf _
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
 * @example
 *
 * _.isMap(new Map);
 * // => true
 *
 * _.isMap(new WeakMap);
 * // => false
 */
function isMap(value) {
  return isObjectLike(value) && getTag(value) == mapTag;
}

export default isMap;